29818196091 has 16 divisors (see below), whose sum is σ = 44177886720. Its totient is φ = 19877545800.

The previous prime is 29818196081. The next prime is 29818196143. The reversal of 29818196091 is 19069181892.

29818196091 is a `hidden beast` number, since 2 + 9 + 8 + 18 + 19 + 609 + 1 = 666.

It is not a de Polignac number, because 29818196091 - 2⁹ = 29818195579 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (29818196011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 640386 + ... + 685368.

It is an arithmetic number, because the mean of its divisors is an integer number (2761117920).

Almost surely, 2^29818196091 is an apocalyptic number.

29818196091 is a deficient number, since it is larger than the sum of its proper divisors (14359690629).

29818196091 is a wasteful number, since it uses less digits than its factorization.

29818196091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69543 (or 69537 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 54.

The spelling of 29818196091 in words is "twenty-nine billion, eight hundred eighteen million, one hundred ninety-six thousand, ninety-one".